> For the complete documentation index, see [llms.txt](https://doc.1sol.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.1sol.io/what-is-1sol.md).

# What is 1Sol

1Sol Protocol is a cross-chain DEX aggregator for decentralized protocols on Solana, enabling the most seamless, efficient and protected operations in DeFi. With DeFi infrastructure rapidly growing, aggregators in high demand, cross-chain transactions being the future, 1Sol is born to bring together liquidity from both DeFi and CeFi (swaps, orderbook DEX(s), OTC, etc.) for multi-chains.